Cortical surface meshes were generated from the T1-weighted anatomical scans using FreeSurfer [1]}. Before surface reconstruction, anatomical surface segmentations were hand-checked and corrected. Blender was used to remove the corpus callosum and make relaxation cuts for flattening. Functional images were aligned to the cortical surface using boundary based registration (BBR) in FSL. These alignments were manually checked for accuracy and adjustments were made as necessary. Flat maps were created by projecting the values for each voxel onto the cortical surface using the “nearest” scheme in pycortex [2]}.
